Now many young people ________posting articles and photos onto the Wechat (微信) to share with their friends.
A:are used for
B:are used to
C: used to
D:get used for
设集合A=x|12<x<2B=x|x2<1,则A∪B=( )
在设计“探究光对蟑螂生活的影响”实验时,除了( )条件外,其他条件的选择都应相同.